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首页> 外文期刊>Fresenius Environmental Bulletin >OPTIMIZATION OF A PD-LOADED COMPOSITE ELECTRODE FOR REDUCTIVE DECHLORINATION OF 2,4-DICHLOROPHENOL IN NEUTRAL AQUEOUS SOLUTION
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OPTIMIZATION OF A PD-LOADED COMPOSITE ELECTRODE FOR REDUCTIVE DECHLORINATION OF 2,4-DICHLOROPHENOL IN NEUTRAL AQUEOUS SOLUTION

机译：用于中性水溶液中2,4-二氯酚还原脱氯的PD负载复合电极的优化

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摘要

A Pd-loaded composite electrode was prepared by electrodeposition method, modified by a sodium dodecyl benzene sulfonate (SDBS) doping polypyrrole (PPy) film. Pd particles were uniformly dispersed on a PPy-SDBS film which was previously electrodeposited on the meshed Ti supporting electrode. Preparation parameters of the Pd/PPy-SDBS/Ti electrode were optimized, i.e. SDBS concentration of 1.00 g/L, Pd electrodepositing current of 20 mA, and time of 30 min. The prepared Pd/PPy-SDBS/Ti electrode was characterized by scanning electron microscopy (SEM), cyclic voltammetry (CV) and inductively coupled plasma-atomic emission spectrometry (ICP-AES). Electrocatalytic dechlorination of 2,4-DCP in aqueous solution was performed in a two-compartment cell separated by cation-exchange membrane. The conversion efficiency of 2,4-DCP could be up to 96.7% within 90 min with current of 5 mA when initial concentration was 100 mg/L. The Pd/PPy-SDBS/Ti electrode shows high catalytic activity and low cost, presenting a good application prospect in dechlorination of chlorinated organic compounds.
机译：通过电沉积方法制备负载钯的复合电极，并用十二烷基苯磺酸钠（SDBS）掺杂聚吡咯（PPy）膜改性。 Pd颗粒均匀地分散在预先电沉积在网状Ti支撑电极上的PPy-SDBS膜上。优化了Pd / PPy-SDBS / Ti电极的制备参数，即SDBS浓度为1.00 g / L，Pd电沉积电流为20 mA，时间为30分钟。通过扫描电子显微镜（SEM），循环伏安法（CV）和电感耦合等离子体原子发射光谱法（ICP-AES）对制备的Pd / PPy-SDBS / Ti电极进行表征。在由阳离子交换膜分离的两室电池中，对水溶液中的2,4-DCP进行电催化脱氯。当初始浓度为100 mg / L时，电流为5 mA时，在90分钟内2,4-DCP的转化效率可以达到96.7％。 Pd / PPy-SDBS / Ti电极具有较高的催化活性和较低的成本，在氯化有机物的脱氯中具有良好的应用前景。

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  • 来源
    《Fresenius Environmental Bulletin》 |2015年第2期|539-545|共7页
  • 作者

    Xuefeng Wei; Ran Du; Zhirong Sun; Xiang Hu;

  • 作者单位

    College of Environmental & Energy Engineering, Beijing University of Technology, Beijing 100124, P.R. China,College of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang 471003, P.R. China;

    College of Environmental & Energy Engineering, Beijing University of Technology, Beijing 100124, P.R. China;

    College of Environmental & Energy Engineering Beijing University of Technology 100 Pingleyuan, Chaoyang District Beijing 100124 P.R.CHINA;

    College of Chemical Engineering Beijing University of Chemical Technology 15 Beisanhuan East Road, Chaoyang District Beijing 100029 P.R. CHINA;

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  • 正文语种 eng
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  • 关键词

    Dechlorination; 2,4-dichlorophenol (2,4-DCP); electrodeposition; composite electrode;

    机译：脱氯2,4-二氯苯酚（2,4-DCP）;电沉积复合电极;

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